A story I found on the background of the brakes I just bought, typically a late adopter,
my wish was for aluminum, but Carbon was all i could find, on close out..
http://www.cxmagazine.com/spooky-bra...-van-der-burgt.

the Toe-In is resolved by TRP's Adjust in place Brake shoes/ plain post, holders..
bolt runs through the post and there is a curved face that allows the shoe to be angled..